On the scale effects oriented MIMO detector: Diversity order, worst-case unit complexity and scale effects

Authors:
Rongrong Qian;Yuan Qi;Tao Peng;Wenbo Wang;Jun Yang
Affiliations:
School of Automation, Beijing University of Posts and Telecommunications (BUPT), Beijing, China;School of Electronic Engineering, BUPT, Beijing, China;Key Laboratory of Universal Wireless Communication, Ministry of Education, BUPT, Beijing, China;Key Laboratory of Universal Wireless Communication, Ministry of Education, BUPT, Beijing, China;School of Automation, Beijing University of Posts and Telecommunications (BUPT), Beijing, China
Venue:
Signal Processing
Year:
2013

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Abstract

In this paper, the insight into the scale effects oriented MIMO detector (SEOD) which is developed for the MIMO system that has to detect signals of multiple users, e.g., the multiple-antenna base-station (BS) system, is presented. The diversity order, complexity and scale effects of SEOD are investigated. The main contributions of this work can be listed as follows: (1) applying the concept of scale effects in microeconomics to MIMO detection and establishing the corresponding model for the analysis of scale effects; (2) presenting the complete proof of the existence of scale effects in our proposed SEOD scheme; (3) demonstrating that the scale effects can be utilized to realize MIMO detection that has the optimal performance in the sense of diversity order while keeping the worst-case unit complexity be polynomial in multiple-user system. Through the computer simulation, we obtain the numerical results which support the theoretical analysis.